Giancarlo Andres Diaz, MD

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

W1774 Issued in TX

Practice address

4502 Medical Dr
San Antonio, TX 78229-4492

Phone

(210) 358-4000

Fax

(210) 358-4775

NPI assigned

Apr 14, 2021

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in NY, TX2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Anesthesiology

Education

Other, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Lone Star Anesthesia Partners PLLCGroup PAC ID 4880072636, 58 clinicians

North American Partners in Anesthesia LLPGroup PAC ID 7719885771, 427 clinicians

Community Medicine AssociatesGroup PAC ID 7719979509, 590 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Crouse Hospital Hospital, Syracuse, NY, CCN 330203
• Methodist Hospital Hospital, San Antonio, TX, CCN 450388

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Community Medicine Associates

  dba University Medicine Associates

  • Family Medicine Physician
  • San Antonio, TX
  • NPI 1245313329
  Medicare reassignment Care Compare group NPD
• Lone Star Anesthesia Partners PLLC

  • Anesthesiology Physician
  • San Antonio, TX
  • NPI 1124760996
  Medicare reassignment Care Compare group NPD
• North American Partners in Anesthesia LLP

  • Anesthesiology Physician
  • Melville, NY
  • NPI 1649264706
  Medicare reassignment Care Compare group NPD
• University of Texas Health Science Center at San Antonio

  dba UT Health Physicians

  • Internal Medicine Physician
  • San Antonio, TX
  • NPI 1720051717
  Medicare reassignment
• The University of Texas Health Science Center at San Antonio

  dba UT Health San Antonio Multispecialty & Research Hospital

  • General Acute Care Hospital
  • San Antonio, TX
  • NPI 1326829904
  NPD
• University of Texas Health Science Center at San Antonio

  dba UT Health Imaging

  • Diagnostic Radiology Physician
  • Boerne, TX
  • NPI 1417921834
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Methodist Healthcare System of San Antonio, LTD., L.L.P.

  dba Methodist Hospital

  • General Acute Care Hospital
  • San Antonio, TX
  • NPI 1124074273
  Care Compare affiliation
• Methodist Healthcare System of San Antonio, LTD., L.L.P.

  dba Metropolitan Methodist Hospital

  • General Acute Care Hospital
  • San Antonio, TX
  • NPI 1689627655
  Care Compare affiliation
• Methodist Healthcare System of San Antonio, LTD., L.L.P.

  dba Methodist Specialty and Transplant Hospital

  • General Acute Care Hospital
  • San Antonio, TX
  • NPI 1952348021
  Care Compare affiliation
• Crouse Health Hospital, Inc.

  • General Acute Care Hospital
  • Syracuse, NY
  • NPI 1033107743
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1618358400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772582400000",
    "number": "1538740394",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4502 MEDICAL DR",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782294402",
            "telephone_number": "210-358-4000",
            "fax_number": "210-358-4775"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4502 MEDICAL DR",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782294492",
            "telephone_number": "210-358-4000",
            "fax_number": "210-358-4775"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1310 McCullough Ave",
            "address_purpose": "LOCATION",
            "city": "San Antonio",
            "state": "TX",
            "postal_code": "782125601",
            "country_code": "US",
            "telephone_number": "210-757-2200",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "5106 W Loop 1604 N",
            "address_purpose": "LOCATION",
            "city": "San Antonio",
            "state": "TX",
            "postal_code": "782514408",
            "country_code": "US",
            "telephone_number": "726-243-2000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DIAZ",
        "first_name": "GIANCARLO",
        "middle_name": "ANDRES",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-14",
        "last_updated": "2026-03-04",
        "certification_date": "2026-03-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "TX",
            "license": "W1774",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Elvia Guadalupe Diaz, COTA
• Eric Diaz
• Gabriella Danielle Diaz, DDS, MSD
• Gabrielle Renee Diaz
• George Diaz
• Heidi Diaz, M.S., CCC-SLP
• Ivonne Diaz, PHARM D
• Jeremy Diaz, PA
• Jose Andres Diaz, MD
• Jose Ignacio Diaz, MD

• Anesthesiology Physician in San Antonio, TX
• Providers in San Antonio, TX by specialty
• Anesthesiology Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 4, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.